Dtc P0103 - Mazda 6 2002 Workshop Manual

DTC P0103

DTC P0103 MAF circuit high input
• PCM monitors input voltage from MAF sensor when engine running. If input voltage at PCM terminal 1P is
above 4.9 V, PCM determines that MAF circuit has malfunction.
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
• PENDING CODE is available if PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
• MAF sensor malfunction
POSSIBLE • Connector or terminal malfunction
CAUSE • Short to power in wiring between MAF/IAT sensor terminal C and PCM terminal 1P.
• Open circuit in MAF/IAT sensor ground circuit
Diagnostic procedure
STEP
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F–66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
2 INSPECT POOR CONNECTION OF MAF
SENSOR CONNECTOR
• Turn ignition key to OFF.
• Disconnect the MAF/IAT sensor connector.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Go to net step.
No Intermittent concern eists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F–227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
Yes Repair or replace terminals, then go to Step 6.
No Go to net step.
A6E397001084W10
ACTION
F–85
F